the australian factor, page-13

There were probably two reasons why BTX upped the price for using their facilities-
1) Stonehenge tin (has lease next to AGM) had some tin ready for processing, sold it to BTX. Ie BTX reneged on the proposed deal with AGM.
2) BTX will have to employ the miners that AGM wont offer a job. AGM has picked the eyes out of the available miners, and this has made BTX angry. Thats why they did a deal with Stonehenge and paid them top dollar for the first tin shipment. But AGM called their bluff and said we wont go ahead with the deal at your prices.

So BTX payed top dollar for some tin, and were left with no deal with AGM. What a mess!